Source: https://seerepo.com/compare/bojieli/ai-agent-book/vs/multica-ai/multica
Markdown source: https://seerepo.com/compare/bojieli/ai-agent-book/vs/multica-ai/multica.md
Description: ai-agent-book and multica share 5 technologies: React, Next.js, Postgres, OpenAI, and PostHog. ai-agent-book is written in Python and multica in Go.

# ai-agent-book vs multica

ai-agent-book and multica share 5 technologies: React, Next.js, Postgres, OpenAI, and PostHog. ai-agent-book is written in Python and multica in Go.

- [bojieli/ai-agent-book](https://seerepo.com/r/bojieli/ai-agent-book): 《深入理解 AI Agent：设计原理与工程实践》（李博杰 著）开源主仓库：全书正文、编译版 PDF 与按章配套代码
- [multica-ai/multica](https://seerepo.com/r/multica-ai/multica): Make humans and AI agents work as one team — open-source and self-hostable.

## What they share and what sets them apart

- In common: React, Next.js, Postgres, OpenAI, PostHog
- Only in ai-agent-book: Vite, Astro, Express, FastAPI, Anthropic, Google
- Only in multica: Expo, chi, net/http, Redis, Resend

## Side by side

| | ai-agent-book | multica |
|---|---|---|
| Size | 422,452 lines written, 1,096 code files | 1,347,852 lines written, 2,534 code files |
| Who writes it | 20.8% of its commits signed by AI. With Claude Code | 35.6% of its commits signed by AI. With Claude Code, Codex, Cursor, and GitHub Copilot |
| Activity | Last push October 8, 2026, 1,610 commits, 56,304 stars | Last push October 28, 2026, 5,228 commits, 54,065 stars |
| Tests | 624 test files. 34.1% of its code files have a test that imports them | 2,243 test files. 62.6% of its code files have a test that imports them |

- Size: Lines written by people and agents, without generated ones; code files, without tests.
- Who writes it: A commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
- Activity: From GitHub and its history, on the day SeeRepo read it.
- Tests: The files that test the code, and the share of code files a test imports.

## Frequently asked questions

### Which is bigger, ai-agent-book or multica?

multica, with 1,347,852 lines written in 2,534 code files; ai-agent-book has 422,452 in 1,096.

The proof: [multica-ai/multica's code at commit 4a0c147](https://github.com/multica-ai/multica/tree/4a0c147c5020db450fd24459a0da6014fbb9a3d2)

### Which has more GitHub stars, ai-agent-book or multica?

ai-agent-book, with 56,304 stars; multica has 54,065.

The proof: [bojieli/ai-agent-book on GitHub](https://github.com/bojieli/ai-agent-book)

### Which has more tests, ai-agent-book or multica?

multica, with 2,243 test files; ai-agent-book has 624.

The proof: [multica-ai/multica's code at commit 4a0c147](https://github.com/multica-ai/multica/tree/4a0c147c5020db450fd24459a0da6014fbb9a3d2)

### Which was updated more recently, ai-agent-book or multica?

multica: its last push was on October 28, 2026, and ai-agent-book's on October 8, 2026.

The proof: [multica-ai/multica's commits on GitHub](https://github.com/multica-ai/multica/commits)

### Which has more commits signed by AI, ai-agent-book or multica?

multica: an AI signed 35.6% of its commits, with Claude Code, Codex, Cursor, and GitHub Copilot; in ai-agent-book, 20.8%.

The proof: [the commits each tool signed in multica-ai/multica](https://seerepo.com/r/multica-ai/multica/ai)

## Sources

- bojieli/ai-agent-book: Read on October 28, 2026, at commit dbc046e (https://github.com/bojieli/ai-agent-book/tree/dbc046eb896ac4e39aa19c7774c8bf49583b89a6)
- multica-ai/multica: Read on October 28, 2026, at commit 4a0c147 (https://github.com/multica-ai/multica/tree/4a0c147c5020db450fd24459a0da6014fbb9a3d2)

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.